Question

7gm of sulphur is dissolved in 14 gm of carbon di sulphide. Calculate the percentage amount of the sulphur in the solution.​

Answer 1

Given, Carbon disulphide CS

2

Molar mass of CS

2

=12g+32×2g

=12+64g=76g

i.e; 12g of C reacts with 64g of S to form 76g CS

2

Also, in 12g of C forms 76g CS

2

⇒3.0g of C forms

12

76×3

g of CS

2

⇒19g of CS

2

is formed.

Also,

If 76g CS

2

has 64g of S

then, 19g CS

2

will have

76

19×64

g of S

⇒16.0g of S is present.

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